Vliv tlaku na vlastnosti anodového připojení oblouku plazmatronu

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F05%3A00022261" target="_blank" >RIV/61389021:_____/05:00022261 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/05:00374713

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of pressure on behavior of anode attachment of dc arc plasma torch

Popis výsledku v původním jazyce

Anode attachment region of dc arc in hybrid argon/water plasma torch was studied at different ambient pressures. Anode region was photographed by CCD camera and voltage fluctuations, caused by anode attachment movement in a restrike mode, were measured by high frequency voltage dividers. The velocity of downstream movement of anode attachment increased with the reduction of pressure and the position of the attachment was shifted counter-stream-wise. The amplitude as well as the frequency of saw-tooth voltage fluctuations was reduced with decreasing pressure. For ambient pressures lower than 30 kPa the constricted anode attachment was not observed and the anode region has diffuse character. The change of anode attachment regime coincides with change ofcharacter of the jet flow from subsonic to supersonic. The measured dependences are explained by changes in the sheath between the plasma jet and the anode surface.

Název v anglickém jazyce

Effect of pressure on behavior of anode attachment of dc arc plasma torch

Popis výsledku anglicky

Anode attachment region of dc arc in hybrid argon/water plasma torch was studied at different ambient pressures. Anode region was photographed by CCD camera and voltage fluctuations, caused by anode attachment movement in a restrike mode, were measured by high frequency voltage dividers. The velocity of downstream movement of anode attachment increased with the reduction of pressure and the position of the attachment was shifted counter-stream-wise. The amplitude as well as the frequency of saw-tooth voltage fluctuations was reduced with decreasing pressure. For ambient pressures lower than 30 kPa the constricted anode attachment was not observed and the anode region has diffuse character. The change of anode attachment regime coincides with change ofcharacter of the jet flow from subsonic to supersonic. The measured dependences are explained by changes in the sheath between the plasma jet and the anode surface.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

<a href="/cs/project/GA202%2F05%2F0669" target="_blank" >GA202/05/0669: Expandující supersonický proud plazmatu generovaný v obloucích stabilizovaných vodou</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2005

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

High Temperature Materials and Processes

ISSN

1093-3611

e-ISSN

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Svazek periodika

9

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

391-400

Kód UT WoS článku

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EID výsledku v databázi Scopus

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